experimental_streamedQuery

function experimental_streamedQuery<TQueryFnData, TData, TQueryKey>(options: StreamedQueryParams<TQueryFnData, TData, TQueryKey>): (context: object) => TData | Promise<TData>;

Defined in: packages/query-core/src/streamedQuery.ts:70

This is a helper function to create a query function that streams data from an AsyncIterable. Data will be an Array of all the chunks received. The query will be in a 'pending' state until the first chunk of data is received, but will go to 'success' after that. The query will stay in fetchStatus 'fetching' until the stream ends.

Type Parameters

TQueryFnData

TQueryFnData = unknown

TData

TData = TQueryFnData[]

TQueryKey

TQueryKey extends readonly unknown[] = readonly unknown[]

Parameters

options

StreamedQueryParams<TQueryFnData, TData, TQueryKey>

The streamFn that returns an AsyncIterable to stream data from, and the optional refetchMode, reducer, and initialValue options.

Returns

A query function to pass as queryFn.

(context: object) => TData | Promise<TData>

Example

await queryClient.query({
  queryKey: ['data'],
  queryFn: streamedQuery({
    streamFn: fetchDataInChunks,
  }),
})